Develop a form using JavaScript that collects client body statistics and customer contact information for record keeping and marketing purposes.

Contact Information fields:
1. Name
2. Address*
3. Phone number*
4. E-mail

Body statistics fields:
1. Age
2. Gender
3. Height
4. Weight
5. Waist*
6. Blood Pressure*
7. Medication currently being taken*

Create an HTML page with a form for clients to submit their contact information and body statistics.

Create another HTML page that acknowledges receipt of the client information. This page will read: "Thank you for providing the information needed".